Way back in 1986 I bought a set of electric retracts from Mick Reeves which had normal size lever arm micro switches at both ends of travel. You can buy much smaller micro switches nowadays. By use of a spring touching the leg they staggered the start time so they did not travel perfectly together. The switches were mounted in a way that you could alter their position a little to allow for slightly different than 90 degree angles. All done without any electronics.